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Hi all,
<div>below is the complete error message & list of options.</div>
<div>Best,</div>
<div>Arthur</div>
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<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
STARTING SOLVE FOR TIMESTEP: 1</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
0 KSP unpreconditioned resid norm 7.599999999605e+10 true resid norm 7.599999999605e+10 ||r(i)||/||b|| 1.000000000000e+00</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: DMCreateFieldDecomposition() line 1274 in /home/jolive/petsc/src/dm/interface/dm.c Decomposition defined only after DMSetUp</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: DMCreateFieldDecomposition() line 1274 in /home/jolive/petsc/src/dm/interface/dm.c Decomposition defined only after DMSetUp</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: PETSC: Attaching gdb to ./Stokes of pid 21092 on display localhost:11.0 on machine fuxi</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: PETSC: Attaching gdb to ./Stokes of pid 21093 on display localhost:11.0 on machine fuxi</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: PCFieldSplitSetDefaults() line 467 in /home/jolive/petsc/src/ksp/pc/impls/fieldsplit/fieldsplit.c Unhandled case, must have at least two fields, not 0</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: PCFieldSplitSetDefaults() line 467 in /home/jolive/petsc/src/ksp/pc/impls/fieldsplit/fieldsplit.c Unhandled case, must have at least two fields, not 0</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: PETSC: Attaching gdb to ./Stokes of pid 21092 on display localhost:11.0 on machine fuxi</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: PETSC: Attaching gdb to ./Stokes of pid 21093 on display localhost:11.0 on machine fuxi</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: ------------------------------------------------------------------------</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, probably memory access out of range</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: or see <a href="http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind[1]PETSC">
http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind[1]PETSC</a> ERROR: or try
<a href="http://valgrind.org">http://valgrind.org</a> on GNU/linux and Apple Mac OS X to find memory corruption errors</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: likely location of problem given in stack below</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: --------------------- Stack Frames ------------------------------------</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: Note: The EXACT line numbers in the stack are not available,</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: INSTEAD the line number of the start of the function</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: is given.</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] DMCreateFieldDecomposition line 1251 /home/jolive/petsc/src/dm/interface/dm.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] PCFieldSplitSetDefaults line 320 /home/jolive/petsc/src/ksp/pc/impls/fieldsplit/fieldsplit.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] PCSetUp_FieldSplit line 483 /home/jolive/petsc/src/ksp/pc/impls/fieldsplit/fieldsplit.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] KSPSetUp line 219 /home/jolive/petsc/src/ksp/ksp/interface/itfunc.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] KSPSolve line 381 /home/jolive/petsc/src/ksp/ksp/interface/itfunc.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] PCApply_FieldSplit line 893 /home/jolive/petsc/src/ksp/pc/impls/fieldsplit/fieldsplit.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] KSP_PCApply line 225 /home/jolive/petsc/include/petsc-private/kspimpl.h</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] KSPFGMRESCycle line 111 /home/jolive/petsc/src/ksp/ksp/impls/gmres/fgmres/fgmres.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] KSPSolve_FGMRES line 278 /home/jolive/petsc/src/ksp/ksp/impls/gmres/fgmres/fgmres.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] SNESSolve_KSPONLY line 13 /home/jolive/petsc/src/snes/impls/ksponly/ksponly.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] SNESSolve line 3687 /home/jolive/petsc/src/snes/interface/snes.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: [1] Hipster_RunPicardIterations line 5553 /home/jolive/HIPSTER/hipster/developing_HiPStER/09-16-14_nested_fieldsplits/StokesSolve1.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: User provided function() line 0 in unknown file </div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[1]PETSC ERROR: PETSC: Attaching gdb to ./Stokes of pid 21093 on display localhost:11.0 on machine fuxi</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: ------------------------------------------------------------------------</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, probably memory access out of range</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: or see <a href="http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind[0]PETSC">
http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind[0]PETSC</a> ERROR: or try
<a href="http://valgrind.org">http://valgrind.org</a> on GNU/linux and Apple Mac OS X to find memory corruption errors</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: likely location of problem given in stack below</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: --------------------- Stack Frames ------------------------------------</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: Note: The EXACT line numbers in the stack are not available,</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: INSTEAD the line number of the start of the function</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: is given.</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] DMCreateFieldDecomposition line 1251 /home/jolive/petsc/src/dm/interface/dm.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] PCFieldSplitSetDefaults line 320 /home/jolive/petsc/src/ksp/pc/impls/fieldsplit/fieldsplit.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] PCSetUp_FieldSplit line 483 /home/jolive/petsc/src/ksp/pc/impls/fieldsplit/fieldsplit.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] KSPSetUp line 219 /home/jolive/petsc/src/ksp/ksp/interface/itfunc.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] KSPSolve line 381 /home/jolive/petsc/src/ksp/ksp/interface/itfunc.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] PCApply_FieldSplit line 893 /home/jolive/petsc/src/ksp/pc/impls/fieldsplit/fieldsplit.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] KSP_PCApply line 225 /home/jolive/petsc/include/petsc-private/kspimpl.h</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] KSPFGMRESCycle line 111 /home/jolive/petsc/src/ksp/ksp/impls/gmres/fgmres/fgmres.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] KSPSolve_FGMRES line 278 /home/jolive/petsc/src/ksp/ksp/impls/gmres/fgmres/fgmres.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] SNESSolve_KSPONLY line 13 /home/jolive/petsc/src/snes/impls/ksponly/ksponly.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] SNESSolve line 3687 /home/jolive/petsc/src/snes/interface/snes.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: [0] Hipster_RunPicardIterations line 5553 /home/jolive/HIPSTER/hipster/developing_HiPStER/09-16-14_nested_fieldsplits/StokesSolve1.c</div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: User provided function() line 0 in unknown file </div>
<div style="margin: 0px; font-family: 'Andale Mono'; color: rgb(41, 249, 20); background-color: rgb(0, 0, 0);">
[0]PETSC ERROR: PETSC: Attaching gdb to ./Stokes of pid 21092 on display localhost:11.0 on machine fuxi</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>options:</div>
<div><br>
</div>
<div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-ksp_view -ksp_monitor_true_residual -ksp_converged_reason \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-ksp_type fgmres -ksp_rtol
<span style="color: #272ad8">1.0e-6</span> \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-pc_type fieldsplit -pc_fieldsplit_<span style="color: #272ad8">0</span>_fields
<span style="color: #272ad8">0</span>,<span style="color: #272ad8">1</span>,<span style="color: #272ad8">2</span> -pc_fieldsplit_<span style="color: #272ad8">1</span>_fields
<span style="color: #272ad8">3</span> \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: #272ad8">0</span>_pc_type fieldsplit \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-pc_fieldsplit_<span style="color: #272ad8">0</span>_fieldsplit_<span style="color: #272ad8">0</span>_fields
<span style="color: #272ad8">0</span>,<span style="color: #272ad8">1</span> -pc_fieldsplit_<span style="color: #272ad8">0</span>_fieldsplit_<span style="color: #272ad8">1</span>_fields
<span style="color: #272ad8">2</span> \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: #272ad8">0</span>_pc_fieldsplit_type schur \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: #272ad8">0</span>_pc_fieldsplit_schur_factorization_type upper \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: #272ad8">0</span>_fieldsplit_<span style="color: #272ad8">0</span>_ksp_type preonly \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: #272ad8">0</span>_fieldsplit_<span style="color: #272ad8">0</span>_pc_type lu -fieldsplit_<span style="color: #272ad8">0</span>_fieldsplit_<span style="color: #272ad8">0</span>_pc_factor_mat_solver_package
superlu_dist \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: #272ad8">0</span>_fieldsplit_<span style="color: #272ad8">1</span>_ksp_type preonly \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: #272ad8">0</span>_fieldsplit_<span style="color: #272ad8">1</span>_pc_type lu -fieldsplit_<span style="color: #272ad8">0</span>_fieldsplit_<span style="color: #272ad8">1</span>_pc_factor_mat_solver_package
superlu_dist \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: #272ad8">1</span>_ksp_type preonly \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: #272ad8">1</span>_pc_type lu -fieldsplit_<span style="color: #272ad8">1</span>_pc_factor_mat_solver_package superlu_dist \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-snes_type ksponly \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-snes_converged_reason -snes_linesearch_monitor true</div>
</div>
<div><br>
</div>
<div><br>
<div>
<div>On Sep 22, 2014, at 10:15 PM, Jean-Arthur Louis Olive <<a href="mailto:jaolive@mit.edu">jaolive@mit.edu</a>> wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">
Hi all,
<div>I am using PETSc (dev version) to solve the Stokes + temperature equations. My DM has fields (vx, vy, p, T).</div>
<div><br>
</div>
<div>I would like to use nested fieldsplits to separate the T part from the Stokes part, and apply a Schur complement approach to the Stokes block.</div>
<div>Unfortunately, I keep getting this error message:</div>
<div><span style="color: rgb(41, 249, 20); font-family: 'Andale Mono'; background-color: rgb(0, 0, 0);">[1]PETSC ERROR: DMCreateFieldDecomposition() line 1274 in /home/jolive/petsc/src/dm/interface/dm.c Decomposition defined only after DMSetUp</span></div>
<div><br>
</div>
<div>Here are the command line options I tried:</div>
<div><br>
</div>
<div>
<div><span style="font-family: Menlo; font-size: 11px;">-snes_type ksponly \</span></div>
<div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-ksp_type fgmres \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;"><span style="color: rgb(0, 132, 0);"># define 2 fields: [vx vy p] and [T] </span></div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-pc_type fieldsplit -pc_fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fields <span style="color: rgb(39, 42, 216);">0</span>,<span style="color: rgb(39, 42, 216);">1</span>,<span style="color: rgb(39, 42, 216);">2</span> -pc_fieldsplit_<span style="color: rgb(39, 42, 216);">1</span>_fields <span style="color: rgb(39, 42, 216);">3</span> \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;"><span style="color: rgb(0, 132, 0);"># split [vx vy p] into 2 fields: [vx vy] and [p] </span></div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_pc_type fieldsplit \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">
<div style="margin: 0px;">-pc_fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fields <span style="color: rgb(39, 42, 216);">0</span>,<span style="color: rgb(39, 42, 216);">1</span> -pc_fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fieldsplit_<span style="color: rgb(39, 42, 216);">1</span>_fields <span style="color: rgb(39, 42, 216);">2</span> \</div>
<div style="margin: 0px;"><br>
</div>
<div style="margin: 0px;"><span style="color: rgb(0, 132, 0);"># apply schur complement to [vx vy p]</span></div>
</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_pc_fieldsplit_type schur \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_pc_fieldsplit_schur_factorization_type upper \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;"><br>
</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;"><span style="color: rgb(0, 132, 0);"># solve everything with lu, just for testing</span></div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_ksp_type preonly \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_pc_type lu -fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_pc_factor_mat_solver_package
superlu_dist \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fieldsplit_<span style="color: rgb(39, 42, 216);">1</span>_ksp_type preonly \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fieldsplit_<span style="color: rgb(39, 42, 216);">1</span>_pc_type lu -fieldsplit_<span style="color: rgb(39, 42, 216);">0</span>_fieldsplit_<span style="color: rgb(39, 42, 216);">1</span>_pc_factor_mat_solver_package
superlu_dist \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: rgb(39, 42, 216);">1</span>_ksp_type preonly \</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;">-fieldsplit_<span style="color: rgb(39, 42, 216);">1</span>_pc_type lu -fieldsplit_<span style="color: rgb(39, 42, 216);">1</span>_pc_factor_mat_solver_package superlu_dist \</div>
</div>
</div>
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<div style="margin: 0px; font-size: 11px; font-family: Menlo;"><span style="font-family: Helvetica; font-size: 12px;">Any idea what could be causing this?</span></div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;"><span style="font-family: Helvetica; font-size: 12px;">Thanks a lot,</span></div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;"><span style="font-family: Helvetica; font-size: 12px;">Arthur</span></div>
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